[R] Return invisible list

David Winsemius dwinsemius at comcast.net
Thu Jul 7 21:30:11 CEST 2011

On Jul 7, 2011, at 3:00 PM, francisco.ahued wrote:

> Hi, I'm new to R. I'm trying to do some extreme value theory analysis,
> looking at the Mean Excess Plot of a series. These are the commands  
> I type
> to get the plot:
> x=read.table("data.txt",header=T)
> goa=(x[,3])
> meplot(goa)
> I can see the plot, but I would like to see the values of the x and  
> y axis.
> According to this page
> (http://rss.acs.unt.edu/Rdoc/library/VGAM/html/meplot.html), "A list  
> is
> returned invisibly with the following components.

If a function returns something invisibly, it means that you need to  
assign the result to a named object, which can then be inspected.

> threshold  The x axis values.
> meanExcess  The y axis values. Each value is a sample mean minus a  
> value u.
> "
> So my question is, how can I see (or even export) threshold and  
> meanExcess?

David Winsemius, MD
West Hartford, CT

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